W Series Wirewound Power Resistor
The W Series Wirewound Power Resistor is designed with a low thermal resistant ceramic core and offers E24 resistance values. These RoHS compliant resistors are available in a wide power range from 1 to 10 Watts. The coating material meets UL 94V-0 requirements, ensuring safety and durability. Ideal for demanding applications, this series is suitable for smart meters, renewable energy systems, industrial equipment, power supplies and chargers, lighting solutions, and instruments/gauges.
Product Attributes
- Brand: Bourns
- Product Series: W Series
- Core Material: Low thermal resistant ceramic
- Lead Wire Material: Tin-plated copper wire
- Coating Material: Meets UL 94V-0 requirements
- RoHS Compliance: RoHS Directive 2015/863
- Non-inductive version available upon request.
Technical Specifications
| Specification | Details |
|---|---|
| Resistance Range | See Popular Resistance Values Table |
| Tolerance | 5 % |
| Operating Temperature | -55 C to +200 C |
| Temperature Coefficient | 300 ppm/C |
| Maximum Voltage | P*R |
| Short Time Overload | 2.5 times rated voltage, R/R(2 % 0.05 ) for 5 seconds |
| Solderability | 245 3 C for 2.5 0.5 seconds, Over 95 % coverage |
| Resistance to Solder Heat | 260 5 C for 10 1 seconds, R/R(1 % + 0.05 ) |
| Dielectric Strength | Test voltage >500 Vrms for >1 minute (Pass) |
| Insulation Resistance | Test voltage >500 Vrms for 1 minute, >109 |
| Load Life (Humidity) | 40 2 C, 90 to 95 %, 1.5 hours ON, 0.5 hours OFF for 1000 hours at rated power, R/R (5 % + 0.05 ) |
| Load Life | 70 2 C, 1.5 hours ON, 0.5 hours OFF for 1000 hours at rated power, R/R(5 % + 0.05 ) |
Packaging Specifications
| Model | Style | Qty. per Box (Pcs.) | Min. Order Quantity (Pcs.) |
|---|---|---|---|
| W1M | Ammo Pack | 1,000 | 5,000 |
| W2M | Ammo Pack | 500 | 2,000 |
| W3M | Ammo Pack | 500 | 2,000 |
| W5M | Ammo Pack | 500 | 2,000 |
| W7M | Bulk in Box | 25 / 200 | 2,000 |
| W9M | Bulk in Box | 25 / 200 | 2,000 |
| W10M | Bulk in Box | 25 / 200 | 2,000 |
Popular Resistance Values
| Code | R Value | Code | R Value |
|---|---|---|---|
| 15R0 | 15 | 56R0 | 56 |
| 22R0 | 22 | 82R0 | 82 |
| 33R0 | 33 | 1000 | 100 |
| 39R0 | 39 | 1200 | 120 |
| 47R0 | 47 | 1500 | 150 |
Other E24 resistance values available upon request.
How to Order
W [Power Rating] [Pin Style] [Resistance Code] [Tolerance]
- Product Series: W
- Power Rating: 1, 2, 3, 5, 7, 9, 10 Watts
- Pin Style: M = Axial Miniaturized Version
- Resistance Code: R<100 ohms: R represents decimal point (e.g., 56R0 = 56 ohms). R100 ohms: First three digits are significant, fourth digit represents number of zeros (e.g., 1500 = 150 ohms).
- Resistance Tolerance: J = 5 %
Product Dimensions (MM/INCHES)
| Model | L (MM/IN) | D (MM/IN) | W (MM/IN) | T (DIA.) (MM/IN) |
|---|---|---|---|---|
| W1M | 9.5 1.0 (.374 .039) | 3.0 1.0 (.118 .039) | 28.0 3.0 (1.102 .118) | 0.54 0.05 (.021 .002) |
| W2M | 11.5 1.0 (.453 .039) | 4.5 1.0 (.177 .039) | 28.0 3.0 (1.102 .118) | 0.70 0.05 (.028 .002) |
| W3M | 15.5 1.0 (.610 .039) | 5.5 1.0 (.217 .039) | 28.0 3.0 (1.102 .118) | 0.70 0.05 (.028 .002) |
| W5M | 17.5 1.0 (.689 .004) | 6.5 1.0 (.256 .039) | 28.0 3.0 (1.102 .118) | 0.75 0.05 (.030 .002) |
| W7M | 24.5 1.0 (.965 .039) | 8.5 1.0 (.335 .039) | 38.0 3.0 (1.496 .118) | 0.75 0.05 (.030 .002) |
| W9M | 39.5 1.0 (1.555 .039) | 8.5 1.0 (.335 .039) | 38.0 3.0 (1.496 .118) | 0.75 0.05 (.030 .002) |
| W10M | 52.5 1.0 (2.067 .039) | 8.5 1.0 (.335 .0039) | 38.0 3.0 (1.496 .118) | 0.75 0.05 (.030 .002) |
Applications
- Smart meters
- Renewable energy
- Industrial
- Power supplies/chargers
- Lighting
- Instruments/gauges
- White goods
Note: Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth at www.bourns.com/docs/legal/disclaimer.pdf.
2411041600_BOURNS-W2M39R0J_C6000561.pdf
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